3-D Characterization of Multi-Layered Automotive Coating Systems: Stage-1 Analytical Toolbox for Surfaces, Interfaces, and Depth Profiles

2008 ◽  
pp. 373-393
Author(s):  
Karlis Adamsons
Keyword(s):  
Depth Profiles ◽  
Automotive Coating ◽  
Stage 1

DART and LICIACUBE: Documenting Kinetic Impact

2021 ◽  
Author(s):  
Andrew Cheng ◽  
Elizabetta Dotto ◽  
Eugene Fahnestock ◽  
Vincenzo Della Corte ◽  
Nancy Chabot ◽  
...  
Keyword(s):  
Time Delay ◽  
Velocity Distribution ◽  
Physical Properties ◽  
Optical Depth ◽  
Depth Profiles ◽  
Full Characterization ◽  
Approach Distance ◽  
Impact Ejecta ◽  
The Impact

<p>The NASA Double Asteroid Redirection Test (DART) mission will demonstrate asteroid deflection by a kinetic impactor. DART will impact Dimorphos, the secondary member of the (65803) Didymos system, in late September to early October, 2022 in order to change the binary orbit period. DART will carry a 6U CubeSat called LICIACube, contributed by the Italian Space Agency, to document the DART impact and to observe the impact ejecta. LICIACube will be released by DART 10 days prior to Didymos encounter, and LICIACube will fly by Dimorphos at closest approach distance of about 51 km and with a closest approach time delay of about 167 s after the DART impact. LICIACube will observe the structure and evolution of the DART impact ejecta plume and will obtain images of the surfaces of both bodies at best ground sampling about 1.4 m per pixel. LICIACube imaging importantly includes the non-impact hemisphere of the target body, the side not imaged by DART.</p> <p> </p> <p>The LICIACube flyby trajectory, notably the closest approach distance and the time delay of closest approach, are designed to optimize the study of ejecta plume evolution without exposing the satellite to impact hazard. LICIACube imaging will determine the direction of the ejecta plume and the ejection angles, and will further help to determine the ejecta momentum transfer efficiency <em>β</em>. The ejecta plume structure, as it evolves over time, is determined by the amount of ejecta that has reached a given altitude at a given time. The LICIACube plume images enable characterization of the ejecta mass versus velocity distribution, which is strongly dependent on target properties like strength and porosity and is therefore a powerful diagnostic of the DART impact, complementary to measurements of the DART impact crater by the ESA Hera mission which will arrive at Didymos in 2026. Hera will measure crater radius and crater volume to determine the total volume of ejecta, which together with a ejecta mass-velocity distribution gives a full characterization of the DART impact.</p> <p> </p> <p>Models of the ejecta plume evolution as imaged by LICIACube show how LICIACube images can discriminate between different target physical properties (mainly strength and porosity), thereby allowing inferences of the magnitude of the ejecta momentum. Measured ejecta plume optical depth profiles can distinguish between gravity-controlled and strength-controlled impact cases and help determine target physical properties. LICIACube ejecta plume images further provide information on the direction of the ejecta momentum as well as the magnitude, requiring full 2-D simulations of the plume images. We will present new simulation model optical depth profiles across the plume at arbitrary positions.</p> <p><br />We thank NASA for support of the DART project at JHU/APL, under Contract # NNN06AA01C, Task Order # NNN15AA05T. The Italian LICIACube team acknowledges financial support from Agenzia Spaziale Italiana (ASI, contract No. 2019-31-HH.0 CUP<br />F84I190012600).</p>

The Characterization of Depth Profiles of Thin Films and Interfaces by Nuclear Scattering Techniques

1987 ◽  
pp. 381-386
Author(s):  
C. Chauvin ◽  
J. F. Currie ◽  
S. Poulin-Dandurand ◽  
E. Sacher ◽  
A. Yelon ◽  
...  
Keyword(s):  
Thin Films ◽  
Nuclear Scattering ◽  
Depth Profiles

scholarly journals SKRENING BAKTERI TOLERAN PESTISIDA DENGAN BAHAN AKTIF KLORANTRANILIPROL ASAL TANAH PERTANIAN BATURITI TABANAN BALI

2017 ◽  
Vol 21 (1) ◽  
pp. 1
Author(s):  
NI KADEK WIWIK SINTA DEWI ◽  
IDA BAGUS GEDE DARMAYASA ◽  
I KETUT SUNDRA
Keyword(s):  
Large Scale ◽  
Chemical Compounds ◽  
Mineral Medium ◽  
Gram Negative Bacteria ◽  
Soil Mineral ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Numerous Problem ◽  
Stage 1

In Indonesia agriculture practice often used the large scale pesticide application such as insecticide, herbicide, and fungicide. The wide use of toxic pesticide has created numerous problem in increasing environtmental hazard to human and to other animals. Many of soil bacteria had important role to degrading chemical compounds into simpler compounds as a bioremediation agent. The aim of this study was to screen the Chlorantraniliprole tolerant bacteria using soil mineral medium with Prevathon pesticide addition, also teo identificate the species of bacteria. This research was conducted at Microbiology Laboratory, Faculty of Mathematics and Natural Sciences, Udayana University. The research was done in three analysis, (1) bacteria test on Prevathon pesticide addition to mineral medium treatment, (2) characterization of bacteria, (3) Identification of pesticide tolerant bacteria with BD BBL Crystal Enteric/Non FermenterID Kit. The results showed that mineral medium with the addition of pesticides Prevathon treatment able to provide a significant different effect on the enrichment stage 1, stage 2 and stage 3 (P<0.05), there was 5 isolates pesticide tolerant bacteria that isolated from Baturiti Tabanan cultivated soil that was BSP 1, BSP 2, BSP 3 known as gram negative bacteria, and BSP 4, BSP 5 known as Gram positive bacteria, pesticide tolerant bacteria identified as Serratia marcescens which is a Gram negative bacteria group and may cause pathogenic.

Plasma ion implantation of nitrogen into silicon: Characterization of the depth profiles of implanted ions

1994 ◽  
Vol 76 (10) ◽  
pp. 5666-5675 ◽  
Author(s):  
John J. Vajo ◽  
John D. Williams ◽  
Ronghua Wei ◽  
Robert G. Wilson ◽  
Jesse N. Matossian
Keyword(s):  
Ion Implantation ◽  
Depth Profiles

scholarly journals Rough Surface Depth Profiles for the Characterization of Real World Corrosion and Deposition

2013 ◽  
Vol 19 (S2) ◽  
pp. 670-671
Author(s):  
B. Naes ◽  
D. Willingham ◽  
M. Engelhard ◽  
C. Mahoney ◽  
B. McNarmara ◽  
...  
Keyword(s):  
Rough Surface ◽  
Real World ◽  
Depth Profiles

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

scholarly journals Montecarlo Simulation and HAXPES Analysis of Organosilane Segregation in Titania Xerogel Films; Towards a Generic Surface Chemofunctionalization Process

Surfaces ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 352-365
Author(s):  
Javier Mateo Moreno ◽  
Rodrigo Calvo Membibre ◽  
Sergio Pinilla Yanguas ◽  
Juan Rubio Zuazo ◽  
Miguel Manso Siván
Keyword(s):  
Photoelectron Spectroscopy ◽  
Surface Segregation ◽  
Titanium Isopropoxide ◽  
Condensation Process ◽  
X Ray ◽  
Depth Profiles ◽  
Partial Charges ◽  
Xerogel Films ◽  
Non Destructive

The formation of xerogels implies a sequence of hydrolysis and condensation reactions, which are intricate to analyze in heteromolecular sols. We analyze by probabilistic Montecarlo methods the development of hybrid organosilane–titania xerogels and illustrate how partial charges of the reacting molecules can help estimating relative probabilities for the condensation of the molecules. Since the condensation rate of Ti alkoxides is much higher than the corresponding rate of Si alkoxides (especially if bearing a non-hydrolizable group), by imposing a fast condensation process in agreement with low pH kinetics, the process leads to a surface segregation of the organosilane. The simulation results are compared with results of characterization of thin condensates of two different organosilanes within a titanium–isopropoxide matrix. Non-destructive in-depth profiles were obtained by hard x-ray photoelectron spectroscopy, which can resolve through estimation of Si and specific moieties of the organosilane molecules the progress of the condensation. These results are relevant for the generalization of chemo-functionalization processes by kinetic demixing of organosilanes, which have myriad applications in biomedicine and biotechnology.

Compositional Analysis of Polychromes by Laser-Induced Breakdown Spectroscopy

2008 ◽  
Vol 587-588 ◽  
pp. 657-661 ◽  
Author(s):  
Ana J. López ◽  
Mari Paz Mateo ◽  
Ana Santaclara ◽  
Armando Yáñez
Keyword(s):  
Nd:Yag Laser ◽  
Compositional Analysis ◽  
Laser Source ◽  
Laser Induced Breakdown Spectroscopy ◽  
Depth Profiles ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

This study deals with the analysis and characterization of wood polychromes by means of Laser-Induced Breakdown Spectroscopy (LIBS). Specimens from a Baroque altarpiece have been analyzed by using a Q-switched Nd:YAG laser source at the wavelength of 355 nm. Previously, a library of characteristic LIBS spectra of the most commonly used pigments and other materials involved was obtained. The knowledge of these spectra allowed us to identify the main constituents of the different layers in polychromes and to obtain compositional depth profiles.

scholarly journals Parameterized complex dielectric functions of CuIn1−xGaxSe2: applications in optical characterization of compositional non-uniformities and depth profiles in materials and solar cells

2016 ◽  
Vol 24 (9) ◽  
pp. 1200-1213 ◽  
Author(s):  
Puruswottam Aryal ◽  
Abdel-Rahman Ibdah ◽  
Puja Pradhan ◽  
Dinesh Attygalle ◽  
Prakash Koirala ◽  
...  
Keyword(s):  
Solar Cells ◽  
Optical Characterization ◽  
Depth Profiles
Sign in / Sign up

Export Citation Format

Share Document